|Act|Year signed|# Albums released under Bad Boy|
|---|---|---|
|Diddy|1993|6|
|The Notorious B.I.G|1993|5|
|Harve Pierre|1993|–|
|The Hitmen|1993|–|
|Mario Winans|1995|1|
|Kalenna Harper|2004|–|
|Cassie|2006|1|
|Janelle Monáe|2007|2|
|Red Café|2009|–|
|Machine Gun Kelly|2011|1|
|French Montana|2012|1|
|Megan Nicole|2012|–|

Question: what year was machine gun kelly signed?
Answer: 2011